Role of stoichiometric ratio of components during the formation of oxide and hydroxide layers on aluminum in oxoanion solutions

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Prot. Met. (Engl. Transl.); (United States)

OSTI ID:5264998

Mikhailovskii, Y N; Derdzenishvili, G A

This paper investigates the corrosion-electrochemical behavior of aluminum in chloride-fluoride solutions containing oxoanions of the oxidizing type (CrO/sup 2 -//sub 4/, MnO/sup -//sub 4/, MoO/sup 2 -//sub 4/, VO/sup 3 -//sub 4/, WO/sup 2 -//sub 4/). It is shown that, depending on the ratio of the concentrations of the oxoanions and hydroxonium ions, the oxidizing agent may activate or inhibit the corrosion process on the metal. The conditions of formation of surface phases is studied, which can impart good protective properties (conversion coatings), on aluminum during its self-solution.

• Research Organization: Institute of Physical Chemistry, Academy of Sciences
• OSTI ID: 5264998
• Journal Information: Prot. Met. (Engl. Transl.); (United States), Journal Name: Prot. Met. (Engl. Transl.); (United States) Vol. 21:6; ISSN PTNMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM HYDROXIDES
ALUMINIUM OXIDES
ANIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL COATING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATES
CHROMIUM COMPOUNDS
COATINGS
CORROSION
CORROSION PROTECTION
DEPOSITION
ELECTROCHEMICAL COATING
ELECTROCHEMICAL CORROSION
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
KINETICS
MANGANATES
MANGANESE COMPOUNDS
METALS
MOLYBDATES
MOLYBDENUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PASSIVATION
PROTECTIVE COATINGS
QUANTITY RATIO
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
STOICHIOMETRY
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
VANADATES
VANADIUM COMPOUNDS